Initial commit

Initial commit with the already existing examples code.

.gitignore

+#Eclipse
+.settings
+.project
+.classpath
+
+#Maven
+target
+
+#General
+bak
+

README.md

+# Ejemplos de Sockets
+
+Ejemplos de Sockets incluidos en el Tema 2 de la asignatura DAI.
\ No newline at end of file

pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>es.uvigo.esei.dai</groupId>
+	<artifactId>sockets</artifactId>
+	<version>1.0.0-SNAPSHOT</version>
+
+	<name>Ejemplos de DAI - Sockets</name>
+	<inceptionYear>2014</inceptionYear>
+
+	<developers>
+		<developer>
+			<name>Miguel Reboiro-Jato</name>
+			<organization>Escola Superior de Enxeñaría Informática -
+				Universidade de Vigo</organization>
+			<organizationUrl>https://esei.uvigo.es/</organizationUrl>
+			<email>mrjato@uvigo.gal</email>
+		</developer>
+	</developers>
+
+	<licenses>
+		<license>
+			<name>GNU GENERAL PUBLIC LICENSE, Version 3</name>
+			<url>http://www.gnu.org/licenses/gpl.html</url>
+			<distribution>repo</distribution>
+		</license>
+	</licenses>
+
+	<properties>
+		<maven.compiler.source>11</maven.compiler.source>
+		<maven.compiler.target>11</maven.compiler.target>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+
+		<!-- Plugin versions -->
+		<license-maven-plugin.version>2.2.0</license-maven-plugin.version>
+		<maven-compiler-plugin.version>3.11.0</maven-compiler-plugin.version>
+
+		<!-- license-maven-plugin configuration -->
+		<license.licenseName>gpl_v3</license.licenseName>
+		<license.copyrightOwners>Miguel Reboiro Jato</license.copyrightOwners>
+		<license.organizationName>Universidade de Vigo</license.organizationName>
+		<license.addJavaLicenseAfterPackage>false</license.addJavaLicenseAfterPackage>
+	</properties>
+
+	<contributors>
+		<contributor>
+			<name>Miguel Reboiro Jato</name>
+			<email>mrjato@uvigo.gal</email>
+			<organization>Escola Superior de Enxeñaría Informática -
+				Universidade de Vigo</organization>
+			<organizationUrl>https://esei.uvigo.es/</organizationUrl>
+			<roles>
+				<role>author</role>
+				<role>professor</role>
+			</roles>
+		</contributor>
+	</contributors>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>${maven-compiler-plugin.version}</version>
+			</plugin>
+			<plugin>
+				<groupId>org.codehaus.mojo</groupId>
+				<artifactId>license-maven-plugin</artifactId>
+				<version>${license-maven-plugin.version}</version>
+				<executions>
+					<execution>
+						<id>first</id>
+						<goals>
+							<goal>update-file-header</goal>
+						</goals>
+						<phase>process-sources</phase>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+</project>

src/main/java/es/uvigo/esei/dai/sockets/example1/HelloWorldClient.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example1;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.Socket;
+import java.net.UnknownHostException;
+
+public class HelloWorldClient {
+  public static void main(String[] args) {
+    try (Socket socket = new Socket("localhost", 12345)) {
+      System.out.println("Local port: " + socket.getLocalPort());
+      final InputStream input = socket.getInputStream();
+
+      int read;
+      while ((read = input.read()) != -1) {
+        System.out.print((char) read);
+      }
+      System.out.println();
+
+      // El InputStream se cerrará cuando se cierre el Socket
+    } catch (final UnknownHostException e) {
+      System.out.println("Unknown host: localhost");
+    } catch (final IOException e) {
+      System.out.print("Connection error: ");
+      System.out.println(e.getMessage());
+    }
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example1/HelloWorldServer.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example1;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.net.ServerSocket;
+import java.net.Socket;
+
+public class HelloWorldServer {
+  public static void main(String[] args) {
+    try (ServerSocket serverSocket = new ServerSocket(12345)) {
+      while (true) {
+        System.out.println("Antes de accept");
+
+        try (Socket clientSocket = serverSocket.accept()) {
+          System.out.println("Después de accept");
+
+          final OutputStream output = clientSocket.getOutputStream();
+
+          output.write("Hello world".getBytes());
+          output.flush();
+        }
+      }
+    } catch (final IOException e) {
+      System.err.println("Server socket could not be created");
+    }
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example2/HelloWorldReceiver.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example2;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+
+public class HelloWorldReceiver {
+  public static void main(String[] args) {
+    try (DatagramSocket socket = new DatagramSocket(1234)) {
+      final byte[] buffer = new byte[128];
+
+      final DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
+
+      socket.receive(packet);
+
+      final String message = new String(packet.getData(), 0, packet.getLength());
+
+      System.out.println("Mensaje recibido: " + message);
+    } catch (final IOException ioe) {
+      System.out.print("Connection error: ");
+      System.out.println(ioe.getMessage());
+    }
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example2/HelloWorldSender.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example2;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+
+public class HelloWorldSender {
+  public static void main(String[] args) {
+    try (DatagramSocket socket = new DatagramSocket()) {
+      final String message = "Hello World";
+
+      final DatagramPacket packet = new DatagramPacket(
+        message.getBytes(), message.length(), InetAddress.getLocalHost(), 1234
+      );
+
+      socket.send(packet);
+
+      System.out.println("Mensaje enviado");
+    } catch (final IOException ioe) {
+      System.out.print("Error de conexión: ");
+      System.out.println(ioe.getMessage());
+    }
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example3/EchoClient.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example3;
+
+import java.io.BufferedReader;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.Socket;
+import java.net.UnknownHostException;
+
+public class EchoClient {
+  public static void main(String[] args) {
+    // final Console console = System.console();
+    final BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
+
+    try (Socket socket = new Socket("localhost", 1234)) {
+      final DataInputStream input = new DataInputStream(socket.getInputStream());
+      final DataOutputStream output = new DataOutputStream(socket.getOutputStream());
+
+      String line;
+      while ((line = console.readLine()) != null) {
+        System.out.println("INPUT: " + line);
+
+        output.writeUTF(line);
+
+        // Fallará cuando se envíe un "quit"
+        System.out.println("ECHO: " + input.readUTF());
+      }
+    } catch (final UnknownHostException e) {
+      System.out.println("Unknown host: localhost");
+    } catch (final IOException e) {
+      System.out.println("Connection error: " + e.getMessage());
+      e.printStackTrace();
+    }
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example3/EchoReceiver.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example3;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+
+public class EchoReceiver {
+  private static final int PACKET_LENGTH = 1024;
+
+  public static void main(String[] args) {
+    try (DatagramSocket receiverSocket = new DatagramSocket(1234)) {
+      while (true) {
+        final DatagramPacket packet = new DatagramPacket(new byte[PACKET_LENGTH], PACKET_LENGTH);
+
+        // Recepción del paquete
+        receiverSocket.receive(packet);
+
+        // Conversión a mayúsculas
+        final String messageUpperCase = new String(packet.getData(), 0, packet.getLength()).toUpperCase();
+        packet.setData(messageUpperCase.getBytes());
+
+        // Reenvío del paquete
+        receiverSocket.send(packet);
+      }
+    } catch (final IOException e) {
+      System.err.println("Server socket could not be created");
+    }
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example3/EchoSender.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example3;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.UnknownHostException;
+
+public class EchoSender {
+  public static void main(String[] args) {
+    // final Console console = System.console();
+    final BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
+
+    try (DatagramSocket socket = new DatagramSocket(new InetSocketAddress(InetAddress.getLocalHost(), 4444))) {
+      String line;
+      while ((line = console.readLine()) != null) {
+        System.out.println("INPUT: " + line);
+
+        final byte[] lineData = line.getBytes();
+        final DatagramPacket packet = new DatagramPacket(lineData, lineData.length, InetAddress.getLocalHost(), 1234);
+
+        // El paquete se envía
+        socket.send(packet);
+
+        // Se recibe sobre el mismo paquete. Los datos se sobreescriben
+        socket.receive(packet);
+
+        System.out.println("ECHO: " + new String(packet.getData()));
+      }
+    } catch (final UnknownHostException e) {
+      System.out.println("Unknown host: localhost");
+    } catch (final IOException e) {
+      System.out.println("Connection error: " + e.getMessage());
+    }
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example3/EchoServer.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example3;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.net.Socket;
+
+public class EchoServer {
+  public static void main(String[] args) {
+    try (ServerSocket serverSocket = new ServerSocket(1234)) {
+      while (true) {
+        try (Socket clientSocket = serverSocket.accept()) {
+          final DataInputStream input = new DataInputStream(clientSocket.getInputStream());
+          final DataOutputStream output = new DataOutputStream(clientSocket.getOutputStream());
+
+          String message;
+          while (!(message = input.readUTF()).equalsIgnoreCase("quit")) {
+            output.writeUTF(message.toUpperCase());
+            output.flush();
+          }
+        }
+      }
+    } catch (final IOException e) {
+      System.err.println("Server socket could not be created");
+    }
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example4/Message.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example4;
+
+import java.io.Serializable;
+
+public class Message implements Serializable {
+  private static final long serialVersionUID = 1L;
+
+  private final String subject;
+  private final String message;
+
+  public Message(String subject, String message) {
+    this.subject = subject;
+    this.message = message;
+  }
+
+  public String getSubject() {
+    return subject;
+  }
+
+  public String getMessage() {
+    return message;
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example4/MessageReceiver.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example4;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+
+public class MessageReceiver {
+  public static void main(String[] args) {
+    try (DatagramSocket socket = new DatagramSocket(1234)) {
+      final byte[] buffer = new byte[1500];
+
+      while (true) {
+        final DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
+
+        socket.receive(packet);
+
+        try {
+          final ByteArrayInputStream input = new ByteArrayInputStream(buffer);
+          final ObjectInputStream dataInput = new ObjectInputStream(input);
+
+          final Message message = (Message) dataInput.readObject();
+
+          System.out.println("SUBJECT: " + message.getSubject());
+          System.out.println("MESSAGE: " + message.getMessage());
+        } catch (final ClassNotFoundException e) {
+          e.printStackTrace();
+        }
+      }
+    } catch (final IOException ioe) {
+      System.out.println("Connection error: ");
+      System.out.println(ioe.getMessage());
+    }
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example4/MessageSender.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example4;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectOutputStream;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.util.Date;
+
+public class MessageSender {
+  public static void main(String[] args) {
+    try (DatagramSocket socket = new DatagramSocket()) {
+      final ByteArrayOutputStream output = new ByteArrayOutputStream(1500);
+      final ObjectOutputStream dataOutput = new ObjectOutputStream(output);
+
+      final Message message = new Message("Time", "Current time: " + new Date());
+      System.out.println("SUBJECT: " + message.getSubject());
+      System.out.println("MESSAGE: " + message.getMessage());
+      dataOutput.writeObject(message);
+
+      final DatagramPacket packet = new DatagramPacket(
+        output.toByteArray(), output.size(), InetAddress.getLocalHost(), 1234
+      );
+
+      socket.send(packet);
+    } catch (final IOException ioe) {
+      ioe.printStackTrace();
+      System.out.print("Connection error: ");
+      System.out.println(ioe.getMessage());
+    }
+  }
+}

src/main/java/es/uvigo/esei/dai/sockets/example5/ESEIHomeDownload.java

+/*-
+ * #%L
+ * Ejemplos de DAI - Sockets
+ * %%
+ * Copyright (C) 2014 - 2023 Miguel Reboiro Jato
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+package es.uvigo.esei.dai.sockets.example5;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLConnection;
+
+public class ESEIHomeDownload {
+  public static void main(String[] args) {
+    try {
+      final URL url = new URL("https://www.esei.uvigo.es");
+
+      final URLConnection connection = url.openConnection();
+      System.out.println(connection.getClass());
+
+      try (BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
+        String line;
+        while ((line = br.readLine()) != null) {
+          System.out.println(line);
+        }
+      }
+    } catch (final MalformedURLException e) {
+      e.printStackTrace();
+    } catch (final IOException e) {
+      e.printStackTrace();
+    }
+  }
+}